If somebody is behaving like a jerk on IRC , like dumping to a
channel Mb's of garbage, then he should be KICK'ed and
eventually banned from the channel (see `` /HELP MODE'' for details).

If it's a matter of personnal harassment, then you should set a proper
IGNORE on that person (preferably on his userid@hostname).
Remember you can use wildcards expressions for IGNORE. More
about this page .